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  • RE: TPS54494: Rail 2 is drawing more current but OCP not triggered

    Hi Mandan, TPS54494 rail 2 supports 2A continuous Load Current. I would not recommend 4.5A for rail2. Thanks! BRs Lucia
    • Answered

  • TPS54494: Power management forum

    Resolved
    Part Number: TPS54494 Hi, All, I have downloaded the TPS54494 PSpice transient model from the TI website, and created a component and a simulation circuit in LTspice, when the simulation circuit is running, the LTspice system shown "Too few nodes", how…
    • Resolved
    • Answered

  • TPS54494: VREG5 connection for VIN1/VIN2 at 5V

    Resolved
    Part Number: TPS54494 1. For VIN1 fed with a stable 5V input, who to connect VREG5, decoupling cap or 5V input? 2. Do you see issue converting from 5V to 3.3V? Any min On/Off timing issue, as 700KHz is pseudo-fixed? Thansk..
    • Resolved

  • TPS54494: VREG5 bypass ground connection

    TI Thinks Resolved
    Part Number: TPS54494 1. On page 13 of the datasheet, the VREG5 bypass is connected to PGND. On page 17 the layout example shows the bypass is to SGND. Which is correct? 2. Is there a tool to simulate and generate bode plot of the design with TPS54494…

  • TPS54494: Inrush current seen during the power up

    TI Thinks Resolved
    Part Number: TPS54494 We are using TPS54494 on our design to generate four different rails 3.3V, 1.8V, 5V and 3.9V. In our design we are enabling all the buck by connecting it to 12V through a 10K pullup. The buck start turning on when the VIN raises to…

  • TPS54494: voltage ranges

    TI Thinks Resolved
    Part Number: TPS54494 The input voltage range (4.5 V to 18 V) and output voltage range (0.76V to 7V) of the TPS54494 overlap. If an input voltage of 5V is provided, is the output voltage range 0.76V to 5V? Something different? I can't figure this out…
    • Answered

  • TPS54494: Part Damage at almost full load currents on 3.9A CH1 and 1.9A CH2 on EVM

    Resolved
    Part Number: TPS54494 Hi, I have recently got the TPS54494-EVM for the evaluation of the Dual Channel buck and got it working with little success. There are no discrete level alterations on the EVM board done. All tests are performed with Resistive Load…
    • Resolved
    • Answered

  • TINA TI reference design for the TPS54494 controller

    Resolved
    Other Parts Discussed in Thread: TPS54494 , TPS54395 , TINA-TI Hi All, Can you please share the TINA TI reference design for the TPS54494 controller. Thanks
    • Resolved
    • Answered

  • Clarification regarding the TI DC-DC regulators - TPS54294 & TPS54494

    Resolved
    Other Parts Discussed in Thread: TPS54294 , TPS54494 We used the TPS54294 part in the RTM proto board and power supply design is proved. As per the new current requirements planned to use the TPS54294 in the proto-2 design. We observed the following difference…
    • Resolved

  • TPS54494 stability

    Other Parts Discussed in Thread: TPS54494 Hello, I am trying to use the TPS54494 IC as a dual 3.3V / 5V power supply - with little success. The output is mostly stable, but every 20-30ms the IC seems to "stop switching". I have attached an oscilliscope…

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